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93_DbLog extended with more queries for statistics and raw data when used with parameter webchart. Documentation updated.

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git-svn-id: https://svn.fhem.de/fhem/trunk@2973 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
johannnes 2013-03-23 16:15:12 +00:00
parent 37c713bcb4
commit dbda4e2e59
2 changed files with 237 additions and 46 deletions
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4
fhem/CHANGED
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@ -1,6 +1,10 @@
# Add changes at the top of the list.
- SVN
- feature: 93_DbLog extended to give more functions for the charting frontend.
This includes new queries for raw table data and also statistics,
which get sum/max/min/avg values from the database.
Documentation has been updated.
- feature: new module 31_LightScene to save and restore the state of a
group of lights and other actors
- feature: VIERA module added (by teevau)

263
fhem/FHEM/93_DbLog.pm
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@ -397,14 +397,24 @@ DbLog_Connect($)
$hash->{DBH}= $dbh;
if ($hash->{DBMODEL} eq "SQLITE") {
$dbh->do("PRAGMA temp_store=MEMORY");
$dbh->do("PRAGMA synchronous=NORMAL");
$dbh->do("PRAGMA journal_mode=WAL");
$dbh->do("CREATE TEMP TABLE IF NOT EXISTS current (TIMESTAMP TIMESTAMP, DEVICE varchar(32), TYPE varchar(32), EVENT varchar(512), READING varchar(32), VALUE varchar(32), UNIT varchar(32))");
$dbh->do("CREATE TABLE IF NOT EXISTS history (TIMESTAMP TIMESTAMP, DEVICE varchar(32), TYPE varchar(32), EVENT varchar(512), READING varchar(32), VALUE varchar(32), UNIT varchar(32))");
$dbh->do("CREATE INDEX IF NOT EXISTS Search_Idx ON `history` (DEVICE, READING, TIMESTAMP)");
$dbh->do("PRAGMA temp_store=MEMORY");
$dbh->do("PRAGMA synchronous=NORMAL");
$dbh->do("PRAGMA journal_mode=WAL");
$dbh->do("CREATE TEMP TABLE IF NOT EXISTS current (TIMESTAMP TIMESTAMP, DEVICE varchar(32), TYPE varchar(32), EVENT varchar(512), READING varchar(32), VALUE varchar(32), UNIT varchar(32))");
$dbh->do("CREATE TABLE IF NOT EXISTS history (TIMESTAMP TIMESTAMP, DEVICE varchar(32), TYPE varchar(32), EVENT varchar(512), READING varchar(32), VALUE varchar(32), UNIT varchar(32))");
$dbh->do("CREATE INDEX IF NOT EXISTS Search_Idx ON `history` (DEVICE, READING, TIMESTAMP)");
}
# creating an own connection for the webfrontend, saved as DBHF in Hash
# this makes sure that the connection doesnt get lost due to other modules
my $dbhf = DBI->connect_cached("dbi:$dbconn", $dbuser, $dbpassword);
if(!$dbhf) {
Log 2, "Can't connect to $dbconn: $DBI::errstr";
return 0;
}
Log 3, "Connection to db $dbconn established";
$hash->{DBHF}= $dbhf;
return 1;
}
@ -739,7 +749,7 @@ DbLog_Get($@)
################################################################
sub jsonError($) {
my $errormsg = $_[0];
my $json = "{success: false, msg:'$errormsg'}\n";
my $json = '{"success": "false", "msg":"'.$errormsg.'"}';
return $json;
}
@ -751,6 +761,7 @@ sub jsonError($) {
################################################################
sub prepareSql(@_) {
my ($hash, @a) = @_;
my $starttime = $_[5];
$starttime =~ s/_/ /;
my $endtime = $_[6];
@ -760,19 +771,139 @@ sub prepareSql(@_) {
my $xaxis = $_[9];
my $yaxis = $_[10];
my $savename = $_[11];
my ($sql, $jsonstring);
my $jsonChartConfig = $_[12];
my $pagingstart = $_[13];
my $paginglimit = $_[14];
my $dbmodel = $hash->{DBMODEL};
my ($sql, $jsonstring, $countsql, $hourstats, $daystats, $weekstats, $monthstats, $yearstats);
if ($dbmodel eq "POSTGRESQL") {
### POSTGRESQL Queries for Statistics ###
### hour:
$hourstats = "SELECT to_char(timestamp, 'YYYY-MM-DD HH24:00:00') AS TIMESTAMP, SUM(VALUE::float) AS SUM, ";
$hourstats .= "AVG(VALUE::float) AS AVG, MIN(VALUE::float) AS MIN, MAX(VALUE::float) AS MAX, ";
$hourstats .= "COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$hourstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
### day:
$daystats = "SELECT to_char(timestamp, 'YYYY-MM-DD 00:00:00') AS TIMESTAMP, SUM(VALUE::float) AS SUM, ";
$daystats .= "AVG(VALUE::float) AS AVG, MIN(VALUE::float) AS MIN, MAX(VALUE::float) AS MAX, ";
$daystats .= "COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$daystats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
### week:
$weekstats = "SELECT date_trunc('week',timestamp) AS TIMESTAMP, SUM(VALUE::float) AS SUM, ";
$weekstats .= "AVG(VALUE::float) AS AVG, MIN(VALUE::float) AS MIN, MAX(VALUE::float) AS MAX, ";
$weekstats .= "COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$weekstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
### month:
$monthstats = "SELECT to_char(timestamp, 'YYYY-MM-01 00:00:00') AS TIMESTAMP, SUM(VALUE::float) AS SUM, ";
$monthstats .= "AVG(VALUE::float) AS AVG, MIN(VALUE::float) AS MIN, MAX(VALUE::float) AS MAX, ";
$monthstats .= "COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$monthstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
### year:
$yearstats = "SELECT to_char(timestamp, 'YYYY-01-01 00:00:00') AS TIMESTAMP, SUM(VALUE::float) AS SUM, ";
$yearstats .= "AVG(VALUE::float) AS AVG, MIN(VALUE::float) AS MIN, MAX(VALUE::float) AS MAX, ";
$yearstats .= "COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$yearstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
} elsif ($dbmodel eq "MYSQL") {
### MYSQL Queries for Statistics ###
### hour:
$hourstats = "SELECT date_format(timestamp, '%Y-%m-%d %H:00:00') AS TIMESTAMP, SUM(CAST(VALUE AS DECIMAL(12,4))) AS SUM, ";
$hourstats .= "AVG(CAST(VALUE AS DECIMAL(12,4))) AS AVG, MIN(CAST(VALUE AS DECIMAL(12,4))) AS MIN, ";
$hourstats .= "MAX(CAST(VALUE AS DECIMAL(12,4))) AS MAX, COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' ";
$hourstats .= "AND DEVICE = '$device' AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
### day:
$daystats = "SELECT date_format(timestamp, '%Y-%m-%d 00:00:00') AS TIMESTAMP, SUM(CAST(VALUE AS DECIMAL(12,4))) AS SUM, ";
$daystats .= "AVG(CAST(VALUE AS DECIMAL(12,4))) AS AVG, MIN(CAST(VALUE AS DECIMAL(12,4))) AS MIN, ";
$daystats .= "MAX(CAST(VALUE AS DECIMAL(12,4))) AS MAX, COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' ";
$daystats .= "AND DEVICE = '$device' AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
### week:
$weekstats = "SELECT date_format(timestamp, '%Y-%m-%d 00:00:00') AS TIMESTAMP, SUM(CAST(VALUE AS DECIMAL(12,4))) AS SUM, ";
$weekstats .= "AVG(CAST(VALUE AS DECIMAL(12,4))) AS AVG, MIN(CAST(VALUE AS DECIMAL(12,4))) AS MIN, ";
$weekstats .= "MAX(CAST(VALUE AS DECIMAL(12,4))) AS MAX, COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' ";
$weekstats .= "AND DEVICE = '$device' AND TIMESTAMP Between '$starttime' AND '$endtime' ";
$weekstats .= "GROUP BY date_format(timestamp, '%Y-%u 00:00:00') ORDER BY 1;";
### month:
$monthstats = "SELECT date_format(timestamp, '%Y-%m-01 00:00:00') AS TIMESTAMP, SUM(CAST(VALUE AS DECIMAL(12,4))) AS SUM, ";
$monthstats .= "AVG(CAST(VALUE AS DECIMAL(12,4))) AS AVG, MIN(CAST(VALUE AS DECIMAL(12,4))) AS MIN, ";
$monthstats .= "MAX(CAST(VALUE AS DECIMAL(12,4))) AS MAX, COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' ";
$monthstats .= "AND DEVICE = '$device' AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
### year:
$yearstats = "SELECT date_format(timestamp, '%Y-01-01 00:00:00') AS TIMESTAMP, SUM(CAST(VALUE AS DECIMAL(12,4))) AS SUM, ";
$yearstats .= "AVG(CAST(VALUE AS DECIMAL(12,4))) AS AVG, MIN(CAST(VALUE AS DECIMAL(12,4))) AS MIN, ";
$yearstats .= "MAX(CAST(VALUE AS DECIMAL(12,4))) AS MAX, COUNT(VALUE) AS COUNT FROM history WHERE READING = '$yaxis' ";
$yearstats .= "AND DEVICE = '$device' AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY 1 ORDER BY 1;";
} elsif ($hash->{DBMODEL} eq "SQLITE") {
### SQLITE Queries for Statistics ###
### hour:
$hourstats = "SELECT TIMESTAMP, SUM(CAST(VALUE AS FLOAT)) AS SUM, AVG(CAST(VALUE AS FLOAT)) AS AVG, ";
$hourstats .= "MIN(CAST(VALUE AS FLOAT)) AS MIN, MAX(CAST(VALUE AS FLOAT)) AS MAX, COUNT(VALUE) AS COUNT ";
$hourstats .= "FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$hourstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY strftime('%Y-%m-%d %H:00:00', TIMESTAMP);";
### day:
$daystats = "SELECT TIMESTAMP, SUM(CAST(VALUE AS FLOAT)) AS SUM, AVG(CAST(VALUE AS FLOAT)) AS AVG, ";
$daystats .= "MIN(CAST(VALUE AS FLOAT)) AS MIN, MAX(CAST(VALUE AS FLOAT)) AS MAX, COUNT(VALUE) AS COUNT ";
$daystats .= "FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$daystats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY strftime('%Y-%m-%d 00:00:00', TIMESTAMP);";
### week:
$weekstats = "SELECT TIMESTAMP, SUM(CAST(VALUE AS FLOAT)) AS SUM, AVG(CAST(VALUE AS FLOAT)) AS AVG, ";
$weekstats .= "MIN(CAST(VALUE AS FLOAT)) AS MIN, MAX(CAST(VALUE AS FLOAT)) AS MAX, COUNT(VALUE) AS COUNT ";
$weekstats .= "FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$weekstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY strftime('%Y-%W 00:00:00', TIMESTAMP);";
### month:
$monthstats = "SELECT TIMESTAMP, SUM(CAST(VALUE AS FLOAT)) AS SUM, AVG(CAST(VALUE AS FLOAT)) AS AVG, ";
$monthstats .= "MIN(CAST(VALUE AS FLOAT)) AS MIN, MAX(CAST(VALUE AS FLOAT)) AS MAX, COUNT(VALUE) AS COUNT ";
$monthstats .= "FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$monthstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY strftime('%Y-%m 00:00:00', TIMESTAMP);";
### year:
$yearstats = "SELECT TIMESTAMP, SUM(CAST(VALUE AS FLOAT)) AS SUM, AVG(CAST(VALUE AS FLOAT)) AS AVG, ";
$yearstats .= "MIN(CAST(VALUE AS FLOAT)) AS MIN, MAX(CAST(VALUE AS FLOAT)) AS MAX, COUNT(VALUE) AS COUNT ";
$yearstats .= "FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' ";
$yearstats .= "AND TIMESTAMP Between '$starttime' AND '$endtime' GROUP BY strftime('%Y 00:00:00', TIMESTAMP);";
} else {
$sql = "errordb";
}
if($userquery eq "getreadings") {
$sql = "SELECT distinct(reading) FROM current WHERE device = '".$device."'";
$sql = "SELECT distinct(reading) FROM history WHERE device = '".$device."'";
} elsif($userquery eq "getdevices") {
$sql = 'SELECT distinct(device) FROM history';
$sql = "SELECT distinct(device) FROM history";
} elsif($userquery eq "timerange") {
$sql = 'SELECT '.$xaxis.', VALUE FROM history WHERE READING = "'.$yaxis.'" AND DEVICE = "'.$device.'" AND TIMESTAMP Between "'.$starttime.'" AND "'.$endtime.'";';
$sql = "SELECT ".$xaxis.", VALUE FROM history WHERE READING = '$yaxis' AND DEVICE = '$device' AND TIMESTAMP Between '$starttime' AND '$endtime';";
} elsif($userquery eq "hourstats") {
$sql = $hourstats;
} elsif($userquery eq "daystats") {
$sql = $daystats;
} elsif($userquery eq "weekstats") {
$sql = $weekstats;
} elsif($userquery eq "monthstats") {
$sql = $monthstats;
} elsif($userquery eq "yearstats") {
$sql = $yearstats;
} elsif($userquery eq "savechart") {
$jsonstring = '[{x:"'.$xaxis.'",y:"'.$yaxis.'",device:"'.$device.'",starttime:"'.$starttime.'",endtime:"'.$endtime.'"}]';
$sql = "INSERT INTO history (EVENT, READING, VALUE) VALUES('".$jsonstring."', 'savedchart', '".$savename."')";
$sql = "INSERT INTO frontend (TYPE, NAME, VALUE) VALUES ('savedchart', '$savename', '$jsonChartConfig')";
} elsif($userquery eq "deletechart") {
$sql = "DELETE FROM frontend WHERE TYPE = 'savedchart' AND ID = '".$savename."'";
} elsif($userquery eq "getcharts") {
$sql = 'SELECT * FROM history WHERE READING = "savedchart"';
$sql = "SELECT * FROM frontend WHERE TYPE = 'savedchart'";
} elsif($userquery eq "getTableData") {
$countsql = "SELECT count(*) FROM history";
$sql = "SELECT * FROM history LIMIT ".$paginglimit." OFFSET ".$pagingstart;
return ($sql, $countsql);
} else {
$sql = "error";
}
@ -787,62 +918,88 @@ sub prepareSql(@_) {
################################################################
sub chartQuery($@) {
my $sql = prepareSql(@_);
my ($sql, $countsql) = prepareSql(@_);
if ($sql eq "error") {
return jsonError("Could not setup SQL String");
return jsonError("Could not setup SQL String. Maybe the Database is busy, please try again!");
} elsif ($sql eq "errordb") {
return jsonError("The Database Type is not supported!");
}
my ($hash, @a) = @_;
my $dbh= $hash->{DBH};
my $dbhf= $hash->{DBHF};
my $totalcount;
if (defined $countsql && $countsql ne "") {
my $query_handle = $dbhf->prepare($countsql)
or return jsonError("Could not prepare statement: " . $dbhf->errstr . ", SQL was: " .$countsql);
$query_handle->execute()
or return jsonError("Could not execute statement: " . $query_handle->errstr);
my @data = $query_handle->fetchrow_array();
$totalcount = join(", ", @data);
}
# prepare the query
my $query_handle = $dbh->prepare($sql)
or return jsonError("Couldn't prepare statement: " . $dbh->errstr . ", SQL was: " .$sql);
my $query_handle = $dbhf->prepare($sql)
or return jsonError("Could not prepare statement: " . $dbhf->errstr . ", SQL was: " .$sql);
# execute the query
$query_handle->execute()
or return jsonError("Couldn't execute statement: " . $query_handle->errstr);
or return jsonError("Could not execute statement: " . $query_handle->errstr);
my $columns = $query_handle->{'NAME'};
my $columncnt;
# When columns are empty but execution was successful, we have done a successful INSERT
# When columns are empty but execution was successful, we have done a successful INSERT, UPDATE or DELETE
if($columns) {
$columncnt = scalar @$columns;
} else {
return "{success: true, msg:'Insert ok'}\n";
return '{"success": "true", "msg":"All ok"}';
}
my $i = 0;
my $jsonstring = "[";
my $jsonstring = '{"data":[';
while ( my @data = $query_handle->fetchrow_array()) {
if($i == 0) {
$jsonstring .= "{";
$jsonstring .= '{';
} else {
$jsonstring .= ",{";
$jsonstring .= ',{';
}
for ($i = 0; $i < $columncnt; $i++) {
$jsonstring .= "'";
$jsonstring .= '"';
$jsonstring .= uc($query_handle->{NAME}->[$i]);
$jsonstring .= "':'";
$jsonstring .= '":';
if (defined $data[$i]) {
$jsonstring .= $data[$i];
my $fragment = substr($data[$i],0,1);
if ($fragment eq "{") {
$jsonstring .= $data[$i];
} else {
$jsonstring .= '"'.$data[$i].'"';
}
} else {
$jsonstring .= '""'
}
if($i == ($columncnt -1)) {
$jsonstring .= "'";
} else {
$jsonstring .= "',";
if($i != ($columncnt -1)) {
$jsonstring .= ',';
}
}
$jsonstring .= "}";
$jsonstring .= '}';
}
$jsonstring .= ']';
if (defined $totalcount && $totalcount ne "") {
$jsonstring .= ',"totalCount": '.$totalcount.'}';
} else {
$jsonstring .= '}';
}
$jsonstring .= "]";
return $jsonstring;
}
################################################################
@ -1011,7 +1168,7 @@ sub chartQuery($@) {
<ul>
<li>&lt;name&gt;<br>
The name of the defined DbLog, like it is given in fhem.cfg. For functionality this has to be set to <code>logdb</code>.</li>
The name of the defined DbLog, like it is given in fhem.cfg.</li>
<li>&lt;in&gt;<br>
A dummy parameter for FileLog compatibility. Always set to <code>-</code></li>
<li>&lt;out&gt;<br>
@ -1029,6 +1186,14 @@ sub chartQuery($@) {
<code>getdevices</code> to retrieve all available devices<br>
<code>timerange</code> to retrieve charting data, which requires a given xaxis, yaxis, device, to and from<br>
<code>savechart</code> to save a chart configuration in the database. Requires a given xaxis, yaxis, device, to and from, and a 'savename' used to save the chart<br>
<code>deletechart</code> to delete a saved chart. Requires a given id which was set on save of the chart<br>
<code>getcharts</code> to get a list of all saved charts.<br>
<code>getTableData</code> to get jsonformatted data from the database. Uses paging Parameters like start and limit.<br>
<code>hourstats</code> to get statistics for a given value (yaxis) for an hour.<br>
<code>daystats</code> to get statistics for a given value (yaxis) for a day.<br>
<code>weekstats</code> to get statistics for a given value (yaxis) for a week.<br>
<code>monthstats</code> to get statistics for a given value (yaxis) for a month.<br>
<code>yearstats</code> to get statistics for a given value (yaxis) for a year.<br>
</li>
<li>&lt;xaxis&gt;<br>
A string which represents the xaxis</li>
@ -1036,7 +1201,12 @@ sub chartQuery($@) {
A string which represents the yaxis</li>
<li>&lt;savename&gt;<br>
A string which represents the name a chart will be saved with</li>
<li>&lt;chartconfig&gt;<br>
A jsonstring which represents the chart to save</li>
<li>&lt;pagingstart&gt;<br>
An integer used to determine the start for the sql used for query 'getTableData'</li>
<li>&lt;paginglimit&gt;<br>
An integer used to set the limit for the sql used for query 'getTableData'</li>
</ul>
<br><br>
Examples:
@ -1052,6 +1222,8 @@ sub chartQuery($@) {
Will ouput a JSON like this: <code>[{'TIMESTAMP':'2013-02-11 00:10:10','VALUE':'0.22431388090756'},{'TIMESTAMP'.....}]</code></li>
<li><code>get logdb - webchart 2013-02-11_00:00:00 2013-02-12_00:00:00 ESA2000_LED_011e savechart TIMESTAMP day_kwh tageskwh</code><br>
Will save a chart in the database with the given name and the chart configuration parameters</li>
<li><code>get logdb - webchart "" "" "" deletechart "" "" 7</code><br>
Will delete a chart from the database with the given id</li>
</ul>
<br><br>
</ul>
@ -1229,7 +1401,7 @@ sub chartQuery($@) {
<ul>
<li>&lt;name&gt;<br>
Der Name des definierten DbLogs, so wie er in der fhem.cfg angegeben wurde. Muss für Funktionalität auf <code>logdb</code> gesetzt werden.</li>
Der Name des definierten DbLogs, so wie er in der fhem.cfg angegeben wurde.</li>
<li>&lt;in&gt;<br>
Ein Dummy Parameter um eine Kompatibilität zum Filelog herzustellen.
Dieser Parameter ist immer auf <code>-</code> zu setzen.</li>
@ -1249,6 +1421,14 @@ sub chartQuery($@) {
<code>getdevices</code> um alle verfügbaren devices zu erhalten<br>
<code>timerange</code> um Chart-Daten abzufragen. Es werden die Parameter 'xaxis', 'yaxis', 'device', 'to' und 'from' benötigt<br>
<code>savechart</code> um einen Chart unter Angabe eines 'savename' und seiner zugehörigen Konfiguration abzuspeichern<br>
<code>deletechart</code> um einen zuvor gespeicherten Chart unter Angabe einer id zu löschen<br>
<code>getcharts</code> um eine Liste aller gespeicherten Charts zu bekommen.<br>
<code>getTableData</code> um Daten aus der Datenbank abzufragen und in einer Tabelle darzustellen. Benötigt paging Parameter wie start und limit.<br>
<code>hourstats</code> um Statistiken für einen Wert (yaxis) für eine Stunde abzufragen.<br>
<code>daystats</code> um Statistiken für einen Wert (yaxis) für einen Tag abzufragen.<br>
<code>weekstats</code> um Statistiken für einen Wert (yaxis) für eine Woche abzufragen.<br>
<code>monthstats</code> um Statistiken für einen Wert (yaxis) für einen Monat abzufragen.<br>
<code>yearstats</code> um Statistiken für einen Wert (yaxis) für ein Jahr abzufragen.<br>
</li>
<li>&lt;xaxis&gt;<br>
Ein String, der die X-Achse repräsentiert</li>
@ -1256,6 +1436,12 @@ sub chartQuery($@) {
Ein String, der die Y-Achse repräsentiert</li>
<li>&lt;savename&gt;<br>
Ein String, unter dem ein Chart in der Datenbank gespeichert werden soll</li>
<li>&lt;chartconfig&gt;<br>
Ein jsonstring der den zu speichernden Chart repräsentiert</li>
<li>&lt;pagingstart&gt;<br>
Ein Integer um den Startwert für die Abfrage 'getTableData' festzulegen</li>
<li>&lt;paginglimit&gt;<br>
Ein Integer um den Limitwert für die Abfrage 'getTableData' festzulegen</li>
</ul>
<br><br>
Beispiele:
@ -1271,6 +1457,8 @@ sub chartQuery($@) {
Die Ausgabe erfolgt als JSON, z.B.: <code>[{'TIMESTAMP':'2013-02-11 00:10:10','VALUE':'0.22431388090756'},{'TIMESTAMP'.....}]</code></li>
<li><code>get logdb - webchart 2013-02-11_00:00:00 2013-02-12_00:00:00 ESA2000_LED_011e savechart TIMESTAMP day_kwh tageskwh</code><br>
Speichert einen Chart unter Angabe eines 'savename' und seiner zugehörigen Konfiguration</li>
<li><code>get logdb - webchart "" "" "" deletechart "" "" 7</code><br>
Löscht einen zuvor gespeicherten Chart unter Angabe einer id</li>
</ul>
<br><br>
</ul>
@ -1281,4 +1469,3 @@ sub chartQuery($@) {
=end html_DE
=cut